From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brad Campbell Subject: Re: First RAID Setup Date: Fri, 16 Dec 2005 00:46:58 +0400 Message-ID: <43A1D642.2010301@wasp.net.au> References: <0481A62A3E95A044AC20A1A45899645C06B02F4B@glc-mail-1.tessco.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <0481A62A3E95A044AC20A1A45899645C06B02F4B@glc-mail-1.tessco.com> Sender: linux-raid-owner@vger.kernel.org To: "Callahan, Tom" Cc: 'Andargor The Wise' , linux-raid@vger.kernel.org List-Id: linux-raid.ids Callahan, Tom wrote: > It is always wise to build in a spare however, that being said about all > raid levels. In your configuration, if a disk fails in your RAID5, your > array will go down. RAID5 is usually 3+ disks, with a mirror. So you should > have 3 disks at minimum, and then a 4th as a spare. > /me wonders in the days of reliable RAID-6 why we use RAID-5 + spare? RAID-6 has saved me twice now from dual drive failures on a 15 disk array. It's schweeeeeeeeeett Regards, Brad -- "Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so." -- Douglas Adams